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Declination Calculator

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    language:  eng; USA
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    hierarchyLevel:  (MD_ScopeCode) service
    hierarchyLevelName:  Magnetic Grid
    contact:  (CI_ResponsibleParty)
        individualName:  Brian Meyer
        organisationName:  DOC/NOAA/NESDIS/NGDC > National Geophysical Data Center, NESDIS, NOAA, U.S. Department of Commerce
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            phone:  (CI_Telephone)
                voice:  303-497-6125
            address:  (CI_Address)
                electronicMailAddress:  Brian.Meyer@noaa.gov
        role:  (CI_RoleCode) pointOfContact
    dateStamp:  2012-09-05
    metadataStandardName:  ISO 19115-2 Geographic Information - Metadata - Part 2: Extensions for Imagery and Gridded Data
    metadataStandardVersion:  ISO 19115-2:2009(E)
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        numberOfDimensions:  3
        cellGeometry:  (MD_CellGeometryCode) point
        transformationParameterAvailability:  true
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                            name:  European Petroleum Survey Group Geodetic Parameter Registry
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            code:  urn:ogc:def:crs:EPSG::4326
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    identificationInfo:  (MD_DataIdentification)
        citation:  (CI_Citation)
            title:  Declination Calculator
            date:  (CI_Date)
                date:  2009-12-01
                dateType:  (CI_DateTypeCode) publication
            citedResponsibleParty:  (CI_ResponsibleParty)
                individualName:  Stefan Maus
                organisationName:  DOC/NOAA/NESDIS/NGDC > National Geophysical Data Center, NESDIS, NOAA, U.S. Department of Commerce
                contactInfo:  (CI_Contact)
                    phone:  (CI_Telephone)
                        voice:  303-497-6522
                    address:  (CI_Address)
                        electronicMailAddress:  Stefan.Maus@noaa.gov
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                organisationName:  DOC/NOAA/NESDIS/NGDC > National Geophysical Data Center, NESDIS, NOAA, U.S. Department of Commerce
                contactInfo:  (CI_Contact)
                    onlineResource:  (CI_OnlineResource)
                        linkage: http://www.ngdc.noaa.gov/geomag-web/#declination
                role:  (CI_RoleCode) distributor
            presentationForm:  (CI_PresentationFormCode) mapDigital
        abstract:  Declination is calculated using the current International Geomagnetic Reference Field (IGRF) model. Declination is calculated using the current World Magnetic Model (WMM) or International Geomagnetic Reference Field (IGRF) model. While results are typically accurate to 30 minutes of arc, users should be aware that several environmental factors can cause disturbances in the magnetic field.
        purpose:  The purpose of the calculators is to deliver trusted magnetic field values - past, present, and near future - to aid the public as well as the scientific community in proper navigation, positioning, and other operational and research magnetic field scenarios.
        status:  (MD_ProgressCode) completed
        pointOfContact:  (CI_ResponsibleParty)
            individualName:  Stefan Maus
            organisationName:  DOC/NOAA/NESDIS/NGDC > National Geophysical Data Center, NESDIS, NOAA, U.S. Department of Commerce
            contactInfo:  (CI_Contact)
                phone:  (CI_Telephone)
                    voice:  303-497-6522
                address:  (CI_Address)
                    electronicMailAddress:  Stefan.Maus@noaa.gov
            role:  (CI_RoleCode) pointOfContact
        resourceMaintenance:  (MD_MaintenanceInformation)
            maintenanceAndUpdateFrequency:  (MD_MaintenanceFrequencyCode) asNeeded
        graphicOverview:  (MD_BrowseGraphic)
            fileName: http://www.ngdc.noaa.gov/geomag/img/DeclinationMap_US.png
            fileDescription:  Magnetic Declination map for North America for the year 2010
            fileType:  PNG
        descriptiveKeywords:  (MD_Keywords)
            keyword:  EARTH SCIENCE > Solid Earth > Geomagnetism > Magnetic Field
            keyword:  EARTH SCIENCE > Solid Earth > Geomagnetism > Magnetic Declination
            type:  (MD_KeywordTypeCode) theme
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                            description:  This page describes the NASA GCMD Keywords, how to reference those keywords and provides download instructions.
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                            linkage: http://gcmd.nasa.gov/learn/keyword_list.html
                            name:  GCMD Keywords Page
                            description:  This page describes the NASA GCMD Keywords, how to reference those keywords and provides download instructions.
                            function:  (CI_OnLineFunctionCode) information
                    role:  (CI_RoleCode) custodian
        descriptiveKeywords:  (MD_Keywords)
            keyword:  Geographic Region > Global
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                            name:  GCMD Keywords Page
                            description:  This page describes the NASA GCMD Keywords, how to reference those keywords and provides download instructions.
                            function:  (CI_OnLineFunctionCode) information
                    role:  (CI_RoleCode) custodian
        resourceConstraints:  (MD_LegalConstraints)
            useLimitation:  While every effort has been made to ensure that these data are accurate and reliable within the limits of the current state of the art, NOAA cannot assume liability for any damages caused by any errors or omissions in the data, nor as a result of the failure of the data to function on a particular system. NOAA makes no warranty, expressed or implied, nor does the fact of distribution constitute such a warranty.
        resourceConstraints:  (MD_Constraints)
            useLimitation:  Produced by the NOAA National Geophysical Data Center. Not subject to copyright protection within the United States.
        spatialRepresentationType:  (MD_SpatialRepresentationTypeCode) vector
        language:  eng; USA
        topicCategory:  (MD_TopicCategoryCode) geoscientificInformation
        extent:  (EX_Extent)
            description:  The IGRF is a global model that extends back to the begining of the 20th Century and is updated every 5 years to include a forcast model for the following 5 years using observations of the Earth's magnetic field over time to interpolate
            geographicElement:  (EX_GeographicBoundingBox)
                westBoundLongitude:  -180
                eastBoundLongitude:  180
                southBoundLatitude:  -90
                northBoundLatitude:  90
            temporalElement:  (EX_TemporalExtent)
                extent:
                  TimePeriod:
                    beginPosition:  1900-01-01
                    endPosition:  2014-12-31
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    contentInfo:  (MI_CoverageDescription)
        attributeDescription:
          RecordType:  Individual Value
        contentType:  (MD_CoverageContentTypeCode) modelResult
        dimension:  (MD_Band)
            descriptor:  Declination
            maxValue:
              Real:  180
            minValue:
              Real:  -180
            units:
              BaseUnit:
                identifier:  degree
                unitsSystem:
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    distributionInfo:  (MD_Distribution)
        distributionFormat:  (MD_Format)
            name:  HTML Format
            version:  1
            specification:  The Declination Calculator creates an HTML pop-up window which superimposes a compass rose, indicating the declination, onto the location queried and reports the annual change in declination.
            formatDistributor:  (MD_Distributor)
                distributorContact:  (CI_ResponsibleParty)
                    individualName:  Stefan Maus
                    organisationName:  DOC/NOAA/NESDIS/NGDC > National Geophysical Data Center, NESDIS, NOAA, U.S. Department of Commerce
                    contactInfo:  (CI_Contact)
                        phone:  (CI_Telephone)
                            voice:  303-497-6522
                        address:  (CI_Address)
                            electronicMailAddress:  Stefan.Maus@noaa.gov
                    role:  (CI_RoleCode) pointOfContact
        distributionFormat:  (MD_Format)
            name:  XML Format
            version:  1
            specification:  The Declination Calculator creates an XML file which reports the location and date queried as well as the declination and the annual change in declination in decimal minutes per year.
            formatDistributor:  (MD_Distributor)
                distributorContact:  (CI_ResponsibleParty)
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                        address:  (CI_Address)
                            electronicMailAddress:  geomag.models@noaa.gov
                        onlineResource:  (CI_OnlineResource)
                            linkage: http://www.ngdc.noaa.gov/geomag-web/#declination
                    role:  (CI_RoleCode) distributor
        distributionFormat:  (MD_Format)
            name:  CSV Format
            version:  1
            specification:  The Declination Calculator creates an Comma Seperated Variable (CSV) file which reports the location and date queried as well as the declination and the annual change in declination in decimal minutes per year.
            formatDistributor:  (MD_Distributor)
                distributorContact:  (CI_ResponsibleParty)
                    organisationName:  DOC/NOAA/NESDIS/NGDC > National Geophysical Data Center, NESDIS, NOAA, U.S. Department of Commerce
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                        address:  (CI_Address)
                            electronicMailAddress:  geomag.models@noaa.gov
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                            linkage: http://www.ngdc.noaa.gov/geomag-web/#declination
                    role:  (CI_RoleCode) distributor
        distributionFormat:  (MD_Format)
            name:  PDF Format
            version:  1
            specification:  The Declination Calculator creates a Portable Document Format file (PDF) file which reports the location and date queried as well as the declination and the annual change in declination in decimal minutes per year.
            formatDistributor:  (MD_Distributor)
                distributorContact:  (CI_ResponsibleParty)
                    organisationName:  DOC/NOAA/NESDIS/NGDC > National Geophysical Data Center, NESDIS, NOAA, U.S. Department of Commerce
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                        address:  (CI_Address)
                            electronicMailAddress:  geomag.models@noaa.gov
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                            linkage: http://www.ngdc.noaa.gov/geomag-web/#declination
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                individualName:  Stefan Maus
                organisationName:  DOC/NOAA/NESDIS/NGDC > National Geophysical Data Center, NESDIS, NOAA, U.S. Department of Commerce
                contactInfo:  (CI_Contact)
                    phone:  (CI_Telephone)
                        voice:  303-497-6522
                    address:  (CI_Address)
                        electronicMailAddress:  Stefan.Maus@noaa.gov
                role:  (CI_RoleCode) pointOfContact
            distributionOrderProcess:  (MD_StandardOrderProcess)
                fees:  None
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    dataQualityInfo:  (DQ_DataQuality)
        scope:  (DQ_Scope)
            level:  (MD_ScopeCode) service
        lineage:  (LI_Lineage)
            processStep:  (LE_ProcessStep)
                description:  User input of area of interest and time for desired data grid into a web interface.
            processStep:  (LE_ProcessStep)
                description:  User data is sent via HTTP request to a java servelet hosted on a local NGDC server. This checks that all of the necessary information to run the model executable correctly is present and in the correct format.
            processStep:  (LE_ProcessStep)
                description:  NGDC server accesses a C executable, in this case the IGRF executable, and inputs the user data and runs the executable to obtain desired output parameters in XML format.
                processingInformation:  (LE_Processing)
                    identifier:  (MD_Identifier)
                        code:  Processing steps were carried out collectively by the developers of the model. These developers are listed as authors of the associated paper "International Geomagnetic Reference Field: the eleventh generation".
                    algorithm:  (LE_Algorithm)
                        citation:  (CI_Citation)
                            title:  IGRF11 Spherical Harmonic Model.
                            date:  (CI_Date)
                                date:  2010-10-12
                                dateType:  (CI_DateTypeCode) publication
                            citedResponsibleParty:  (CI_ResponsibleParty)
                                contactInfo:  (CI_Contact)
                                    onlineResource:  (CI_OnlineResource)
                                        linkage: http://www.ngdc.noaa.gov/IAGA/vmod/igrf.html
                                role:
                        description:  Refer to technical report, "International Geomagnetic Reference Field: the eleventh generation", for description of algorithms.
            processStep:  (LE_ProcessStep)
                description:  The XML created by the executable is sent back to NGDC server and input into the Java servelet which reformats the output into the format designated by the user at the begining of the process. This reformatted information is returned to the User's webpage.
            source:  (LI_Source)
                description:  The IGRF is the product of a collaborative effort between magnetic field modellers and the institutes involved in collecting and disseminating magnetic field data from satellites and from observatories and surveys around the world. The IGRF is a series of mathematical models of the Earth's main field and its annual rate of change (secular variation).
                sourceCitation:  (CI_Citation)
                    title:  International Geomagnetic Reference Field 11
                    alternateTitle:  IGRF 11
                    date:  (CI_Date)
                        date:  2010-10-12
                        dateType:  (CI_DateTypeCode) revision
                    citedResponsibleParty:  (CI_ResponsibleParty)
                        organisationName:  International Association of Geomagnetism and Aeronomy (IAGA)
                        contactInfo:  (CI_Contact)
                            onlineResource:  (CI_OnlineResource)
                                linkage: http://www.ngdc.noaa.gov/IAGA/vmod/igrf.html
                                name:  International Geomagnetic Reference Field
                                description:  The International Association of Geomagnetism and Aeronomy (IAGA) has released the 11th Generation International Geomagnetic Reference Field, which is the latest version of a standard mathematical description of the Earth's main magnetic field that is used widely in studies of the Earth's deep interior, its crust and its ionosphere and magnetosphere.
                                function:  (CI_OnLineFunctionCode) information
                        role:  (CI_RoleCode) resourceProvider
                    otherCitationDetails:  Report on the Reference Field. Equations and coefficients for the eleventh generation. DOI: 10.1111/j.1365-246X.2010.04804.x
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        maintenanceAndUpdateFrequency:  (MD_MaintenanceFrequencyCode) annually
        maintenanceNote:  Last Review Date: 2013-06-13